Features:1. 200mm big fan design,very low noise and super heat cooling funtion2. Wide-screen design of surface,which improve the efficiency of the cooling funtion3. Reasonable angle design of cooling pad and totally consideration of Ergonomics4. The espanded of USB funtion,which considerate about the needs of the users5. Power switch able6. No need for any installation7. Extend the life and functionality of your laptop8. Convenient, reliable and comfortable to carryCOMPATIBLE   FOR  11  INCH  TO 17 INCH Specifications:1. Fan Quantity: One2. Cooling Type: Air3. Bearing Type: Hydraumatic4. Weight: 18.41 oz / 522 g5. Material: ABS Plastics6. Color: Black8. Fan Dimensions: 7.87 / 20 cm9. USB Length: 18.89 / 48.0 cm10. Speed: 500 RPM11. Powered: USB12. Voltage: 5V DC13. Rates Current: 0.25A14. Compatible Size: 16 mainstream laptopsPackage Includes:1 x USB Laptop Cooling Cooler Pad